The wheel is the most important types of abrasive grinding. The wheel is in the Add to binder in the abrasive, porous body made by the compacts, drying and calcination. Manufacturing process due to the abrasive, bond and different wheel characteristics very different and therefore has an important influence on the grinding process quality, productivity and economic. The characteristics of the grinding wheel mainly by the abrasive, strength, combined with agents, hardness, organization, shape and size factors.

    Range of wheel types.

    By abrasives can be divided into ordinary abrasives (corundum and silicon carbide, etc.) of the grinding wheel and the natural abrasive superabrasive (diamond and cubic boron nitride) grinding wheel;

    Shape can be divided into flat-shaped grinding wheel, bevel wheel, cylindrical grinding wheel, cup wheels, disc wheel; binding agents can be divided into the ceramic grinding wheels, resin grinding wheel, rubber wheel, metal wheel. The characteristic parameters of the grinding wheel abrasives, viscosity, hardness, bond, shape, size, etc..

    Should be carried out due to the grinding wheel is usually at high speeds, and thus prior to use turning test (to ensure the wheel at the highest speed, not rupture caused by machine vibration) and static balance test (to prevent work). Wheel after working for some time, should be trimmed in order to restore the grinding performance and the correct geometry.

    Grinder with a grinding wheel characteristics:

    Leaving the grinding zone temperature is high due to the intense friction. This will cause the workpiece to produce the stress and deformation, and even cause the workpiece surface burn. Therefore must be injected a large amount of coolant in the grinding, to reduce the grinding temperature. The coolant can also be from the chip removal and lubrication.

    Radial force when grinding. This will cause the machine - grinding wheel - workpiece system flexibility concessions, so that the actual depth of cut is less than the nominal depth of cut. Grinding to be completed should not feed for light grinding to remove the error.

    Blunt, abrasive, grinding force increases, causing abrasive broken off, re-exposing a sharp edge, this feature is called self-sharpening, self-sharpening, the grinding normal within a certain time. more than a certain time, artificial trimmed so that the grinding force increases to cause vibration, noise and damage the workpiece surface quality.

    As the grinding wheel abrasive has high hardness and heat resistance, grinding can be machining very hard materials such as hardened steel, carbide, etc..

    Grinding wheel and grinding nature of the grinding process system can even trace cutting, general ap = 0.001 ~ 0.005mm; grinding at high speeds, generally up to v = 30 ~~ 50m / s,; good grinder stiffness; used hydraulic grinding energy and affordable access to high machining accuracy (IT6 ~ IT5) and small surface roughness (, Ra = 0.8 ~~ 0.2m). Grinding is one of the main parts finishing method.